package collection;

import java.util.*;
import java.util.concurrent.Callable;

public class SortInteger {
    public static void main(String[] args) {
        Random rand = new Random();
        List<Integer> list =new ArrayList<>();
        for (int i = 0; i < 10; i++) {
            list.add(rand.nextInt(100));
        }
        System.out.println("list原始数据:"+list);

        Collections.sort(list);
        System.out.println("list排序后数据"+list);

        Collections.reverse(list);
        System.out.println("list反转后数据"+list);
        System.out.println("第一个元素为:"+list.get(0));
    }
}
